hpgltools Differential Expression Analyses Using the Fission Dataset

1 Example hpgltool usage with a real data set (fission)

This document aims to provide further examples in how to use the hpgltools.

Note to self, the header has rmarkdown::pdf_document instead of html_document or html_vignette because it gets some bullcrap error ‘margins too large’…

1.1 Setting up

Here are the commands I invoke to get ready to play with new data, including everything required to install hpgltools, the software it uses, and the fission data.

library(hpgltools)
tt <- sm(library(fission))
tt <- data(fission)

1.2 Data import

All the work I do in Dr. El-Sayed’s lab makes some pretty hard assumptions about how data is stored. As a result, to use the fission data set I will do a little bit of shenanigans to match it to the expected format. Now that I have played a little with fission, I think its format is quite nice and am likely to have my experiment class instead be a SummarizedExperiment.

## Extract the meta data from the fission dataset
meta <- as.data.frame(fission@colData)
## Make conditions and batches
meta$condition <- paste(meta$strain, meta$minute, sep=".")
meta$batch <- meta$replicate
meta$sample.id <- rownames(meta)
## Grab the count data
fission_data <- fission@assays$data$counts
## This will make an experiment superclass called 'expt' and it contains
## an ExpressionSet along with any arbitrary additional information one might want to include.
## Along the way it writes a Rdata file which is by default called 'expt.Rdata'
fission_expt <- create_expt(metadata=meta, count_dataframe=fission_data)

## Reading the sample metadata.

## Matched 7039 annotations and counts.

## Bringing together the count matrix and gene information.

2 Some simple differential expression analyses

Travis wisely imposes a limit on the amount of time for building vignettes. My tools by default will attempt all possible pairwise comparisons, which takes a long time. Therefore I am going to take a subset of the data and limit these comparisons to that.

fun_data <- subset_expt(fission_expt,
                        subset="condition=='wt.120'|condition=='wt.30'")
fun_norm <- sm(normalize_expt(fun_data, batch="limma", norm="quant",
                              transform="log2", convert="cpm"))

2.1 Try using limma first

limma_comparison <- sm(limma_pairwise(fun_data))

names(limma_comparison$all_tables)

## [1] "wt.30_vs_wt.120"

summary(limma_comparison$all_tables$wt.30_vs_wt.120)

##      logFC           AveExpr            t             P.Value      
##  Min.   :-4.278   Min.   :-4.58   Min.   :-88.48   Min.   :0.0000  
##  1st Qu.:-0.399   1st Qu.: 1.11   1st Qu.: -2.60   1st Qu.:0.0192  
##  Median :-0.020   Median : 3.97   Median : -0.13   Median :0.1240  
##  Mean   : 0.008   Mean   : 3.11   Mean   : -0.17   Mean   :0.2792  
##  3rd Qu.: 0.300   3rd Qu.: 5.44   3rd Qu.:  1.72   3rd Qu.:0.4653  
##  Max.   : 7.075   Max.   :18.59   Max.   : 62.44   Max.   :1.0000  
##    adj.P.Val            B        
##  Min.   :0.0170   Min.   :-8.29  
##  1st Qu.:0.0767   1st Qu.:-6.58  
##  Median :0.2479   Median :-5.50  
##  Mean   :0.3686   Mean   :-4.87  
##  3rd Qu.:0.6204   3rd Qu.:-3.50  
##  Max.   :1.0000   Max.   : 4.83

scatter_wt_mut <- extract_coefficient_scatter(limma_comparison, type="limma",
                                              x="wt.30", y="wt.120", gvis_filename=NULL)

## This can do comparisons among the following columns in the pairwise result:

## wt.120, wt.30

## Actually comparing wt.30 and wt.120.

scatter_wt_mut$scatter

scatter_wt_mut$both_histogram$plot + ggplot2::scale_y_continuous(limits=c(0,0.20))

## Warning: Removed 4 rows containing missing values (geom_bar).

ma_wt_mut <- extract_de_plots(limma_comparison, type="limma")
ma_wt_mut$ma$plot

ma_wt_mut$volcano$plot

2.2 Then DESeq2

deseq_comparison <- sm(deseq2_pairwise(fun_data))

summary(deseq_comparison$all_tables$wt.30_vs_wt.120)

##     baseMean           logFC          lfcSE          stat      
##  Min.   :      0   Min.   :-5.6   Min.   :0.1   Min.   :-20.8  
##  1st Qu.:     28   1st Qu.:-0.4   1st Qu.:0.2   1st Qu.: -1.3  
##  Median :    192   Median : 0.0   Median :0.2   Median : -0.1  
##  Mean   :   1703   Mean   : 0.0   Mean   :0.5   Mean   :  0.2  
##  3rd Qu.:    536   3rd Qu.: 0.4   3rd Qu.:0.4   3rd Qu.:  1.2  
##  Max.   :4924000   Max.   : 7.2   Max.   :4.1   Max.   : 30.4  
##                    NA's   :404    NA's   :404   NA's   :404    
##     P.Value         adj.P.Val     
##  Min.   :0.0000   Min.   :0.0000  
##  1st Qu.:0.0197   1st Qu.:0.0685  
##  Median :0.2502   Median :0.4675  
##  Mean   :0.3600   Mean   :0.4805  
##  3rd Qu.:0.6666   3rd Qu.:0.8732  
##  Max.   :1.0000   Max.   :1.0000  
## 

scatter_wt_mut <- extract_coefficient_scatter(deseq_comparison, type="deseq",
                                              x="wt.30", y="wt.120", gvis_filename=NULL)

## This can do comparisons among the following columns in the pairwise result:

## wt.120, wt.30, r2, r3

## Actually comparing wt.30 and wt.120.

scatter_wt_mut$scatter

plots_wt_mut <- extract_de_plots(deseq_comparison, type="deseq")
plots_wt_mut$ma$plot

plots_wt_mut$volcano$plot

## Warning: Removed 404 rows containing missing values (geom_point).

2.3 And EdgeR

edger_comparison <- sm(edger_pairwise(fun_data, model_batch=TRUE))

plots_wt_mut <- extract_de_plots(edger_comparison, type="edger")
scatter_wt_mut <- extract_coefficient_scatter(edger_comparison, type="edger",
                                              x="wt.30", y="wt.120", gvis_filename=NULL)

## This can do comparisons among the following columns in the pairwise result:

## wt.120, wt.30

## Actually comparing wt.30 and wt.120.

scatter_wt_mut$scatter

plots_wt_mut$ma$plot

plots_wt_mut$volcano$plot

2.4 My stupid basic comparison

basic_comparison <- sm(basic_pairwise(fun_data))
summary(basic_comparison$all_tables$wt.30_vs_wt.120)

##  numerator_median denominator_median numerator_var      denominator_var   
##  Min.   :-2.73    Min.   :-3.60      Length:5505        Length:5505       
##  1st Qu.: 3.31    1st Qu.: 3.31      Class :character   Class :character  
##  Median : 4.65    Median : 4.63      Mode  :character   Mode  :character  
##  Mean   : 4.71    Mean   : 4.71                                           
##  3rd Qu.: 5.94    3rd Qu.: 5.93                                           
##  Max.   :18.61    Max.   :18.61                                           
##        t               p                 logFC            adjp          
##  Min.   :-49.10   Length:5505        Min.   :-4.263   Length:5505       
##  1st Qu.: -1.53   Class :character   1st Qu.:-0.406   Class :character  
##  Median :  0.39   Mode  :character   Median :-0.070   Mode  :character  
##  Mean   :  0.16                      Mean   : 0.008                     
##  3rd Qu.:  2.10                      3rd Qu.: 0.297                     
##  Max.   : 50.21                      Max.   : 7.485

scatter_wt_mut <- extract_coefficient_scatter(basic_comparison, type="basic",
                                              x="wt.30", y="wt.120", gvis_filename=NULL)

## This can do comparisons among the following columns in the pairwise result:

## wt.120, wt.30

## Actually comparing wt.30 and wt.120.

scatter_wt_mut$scatter

plots_wt_mut <- extract_de_plots(basic_comparison, type="basic")
plots_wt_mut$ma$plot

plots_wt_mut$volcano$plot

2.5 Combine them all

all_comparisons <- sm(all_pairwise(fun_data, model_batch=TRUE))
all_combined <- sm(combine_de_tables(all_comparisons, excel=FALSE))
head(all_combined$data[[1]])

##              limma_logfc limma_adjp deseq_logfc deseq_adjp edger_logfc
## SPAC1002.01     -0.99860    0.16930    -1.08000    0.36630    -1.05900
## SPAC1002.02      0.03778    0.99460    -0.01485    0.98160    -0.02342
## SPAC1002.03c    -0.33910    0.02432    -0.22760    0.23270    -0.23630
## SPAC1002.04c     0.31760    0.33060     0.33550    0.32470     0.32580
## SPAC1002.05c     0.75440    0.08050     0.74810    0.01187     0.74120
## SPAC1002.06c     0.69490    0.68500     0.50560    1.00000     0.69240
##              edger_adjp limma_ave  limma_t limma_b limma_p deseq_basemean
## SPAC1002.01   0.2201000   -0.1955  -2.8320 -4.0790 0.07147         11.150
## SPAC1002.02   1.0000000    2.8470   0.1354 -7.4050 0.90140         87.420
## SPAC1002.03c  0.1598000    7.0770 -12.5400 -0.6495 0.00151       1621.000
## SPAC1002.04c  0.2151000    4.1960   1.7300 -6.5590 0.18830        222.200
## SPAC1002.05c  0.0009489    3.9020   4.6960 -3.7270 0.02118        187.200
## SPAC1002.06c  0.7328000   -1.9060   0.7146 -6.1430 0.52970          4.176
##              deseq_lfcse deseq_stat  deseq_p edger_logcpm  edger_lr
## SPAC1002.01       0.8208   -1.31600 0.188200      0.06691  2.745000
## SPAC1002.02       0.3316   -0.04479 0.964300      2.89400  0.007429
## SPAC1002.03c      0.1387   -1.64100 0.100800      7.09500  3.399000
## SPAC1002.04c      0.2382    1.40900 0.159000      4.24700  2.794000
## SPAC1002.05c      0.2463    3.03700 0.002391      3.99900 14.270000
## SPAC1002.06c      1.4310    0.35340 0.723800     -0.89280  0.370800
##               edger_p basic_nummed basic_denmed basic_numvar basic_denvar
## SPAC1002.01  0.097570        0.000        0.000            0            0
## SPAC1002.02  0.931300        3.100        2.774    3.603e-01    2.890e-02
## SPAC1002.03c 0.065220        6.909        7.248    2.955e-03    1.016e-03
## SPAC1002.04c 0.094620        4.407        4.195    5.418e-02    1.441e-01
## SPAC1002.05c 0.000158        4.272        3.625    1.293e-01    5.645e-02
## SPAC1002.06c 0.542600        0.000        0.000            0            0
##              basic_logfc  basic_t   basic_p basic_adjp limma_adjp_fdr
## SPAC1002.01       0.0000  0.00000         0          0      1.693e-01
## SPAC1002.02       0.3260 -0.01124 9.919e-01  9.963e-01      9.945e-01
## SPAC1002.03c     -0.3390  9.25600 1.969e-03  3.718e-02      2.432e-02
## SPAC1002.04c      0.2125 -1.26900 2.862e-01  4.542e-01      3.305e-01
## SPAC1002.05c      0.6472 -2.95900 4.975e-02  1.630e-01      8.050e-02
## SPAC1002.06c      0.0000  0.00000         0          0      6.850e-01
##              deseq_adjp_fdr edger_adjp_fdr basic_adjp_fdr   lfc_meta
## SPAC1002.01       4.186e-01      2.201e-01      0.000e+00 -1.0520000
## SPAC1002.02       1.000e+00      1.000e+00      9.954e-01  0.0007106
## SPAC1002.03c      2.682e-01      1.598e-01      7.607e-03 -0.2681000
## SPAC1002.04c      3.722e-01      2.151e-01      4.027e-01  0.3262000
## SPAC1002.05c      1.392e-02      9.489e-04      1.090e-01  0.7512000
## SPAC1002.06c      9.279e-01      7.328e-01      0.000e+00  0.6331000
##                lfc_var lfc_varbymed    p_meta     p_var
## SPAC1002.01  7.689e-04   -7.305e-04 1.191e-01 3.753e-03
## SPAC1002.02  3.191e-03    4.491e+00 9.323e-01 9.899e-04
## SPAC1002.03c 2.166e-03   -8.081e-03 5.584e-02 2.531e-03
## SPAC1002.04c 1.943e-04    5.956e-04 1.473e-01 2.297e-03
## SPAC1002.05c 1.320e-03    1.757e-03 7.910e-03 1.333e-04
## SPAC1002.06c 1.515e-02    2.394e-02 5.987e-01 1.178e-02

sig_genes <- sm(extract_significant_genes(all_combined, excel=FALSE))
head(sig_genes$limma$ups[[1]])

##               limma_logfc limma_adjp deseq_logfc deseq_adjp edger_logfc
## SPBC2F12.09c        7.075    0.01847       7.212  5.244e-66       7.170
## SPAC22A12.17c       5.609    0.02447       5.855  3.969e-19       5.822
## SPAPB1A11.02        5.606    0.01696       6.739  1.893e-06       6.483
## SPCPB16A4.07        5.576    0.01696       5.693 8.186e-199       5.684
## SPNCRNA.1611        5.410    0.01696       5.612  5.040e-16       5.529
## SPBC660.05          5.229    0.02795       5.403  3.101e-14       5.310
##               edger_adjp limma_ave limma_t limma_b   limma_p
## SPBC2F12.09c  1.264e-180    2.5920   19.36  0.8017 0.0004519
## SPAC22A12.17c  3.155e-57    6.4820   12.49 -0.3953 0.0015260
## SPAPB1A11.02   1.257e-14   -1.1920   27.66  0.2698 0.0001667
## SPCPB16A4.07  4.519e-138    6.5360   28.74  2.2890 0.0001498
## SPNCRNA.1611   1.789e-33    0.5594   39.34  1.0980 0.0000622
## SPBC660.05     9.868e-74    3.6400   10.56 -0.5550 0.0024270
##               deseq_basemean deseq_lfcse deseq_stat    deseq_p
## SPBC2F12.09c          443.50      0.4123     17.490  1.662e-68
## SPAC22A12.17c        4289.00      0.6255      9.360  7.945e-21
## SPAPB1A11.02           21.20      1.2810      5.259  1.447e-07
## SPCPB16A4.07         4157.00      0.1875     30.370 1.366e-202
## SPNCRNA.1611           58.57      0.6571      8.541  1.329e-17
## SPBC660.05            523.80      0.6724      8.035  9.365e-16
##               edger_logcpm edger_lr    edger_p basic_nummed basic_denmed
## SPBC2F12.09c        5.2210   839.00 1.796e-184        6.250       -1.235
## SPAC22A12.17c       8.4930   264.90  1.479e-59        9.396        4.087
## SPAPB1A11.02        0.9166    65.83  4.910e-16        1.491       -3.604
## SPCPB16A4.07        8.4490   641.90 1.284e-141        9.416        3.641
## SPNCRNA.1611        2.3170   154.00  2.363e-35        3.380       -1.604
## SPBC660.05          5.4560   341.60  2.804e-76        6.156        1.381
##               basic_numvar basic_denvar basic_logfc basic_t   basic_p
## SPBC2F12.09c     2.211e-02    5.043e-01       7.485 -16.760 2.432e-03
## SPAC22A12.17c    2.236e-02    9.694e-01       5.309 -10.080 8.325e-03
## SPAPB1A11.02     6.869e-01    4.981e-01       5.095  -7.708 1.687e-03
## SPCPB16A4.07     2.022e-02    2.894e-01       5.776 -17.480 1.780e-03
## SPNCRNA.1611     1.174e-01    1.141e-01       4.984 -18.270 5.286e-05
## SPBC660.05       2.068e-01    5.143e-01       4.775 -10.840 9.581e-04
##               basic_adjp limma_adjp_fdr deseq_adjp_fdr edger_adjp_fdr
## SPBC2F12.09c   3.928e-02      1.847e-02      6.157e-66     1.264e-180
## SPAC22A12.17c  6.437e-02      2.447e-02      4.660e-19      3.155e-57
## SPAPB1A11.02   3.452e-02      1.696e-02      2.224e-06      1.257e-14
## SPCPB16A4.07   3.524e-02      1.696e-02     9.615e-199     4.519e-138
## SPNCRNA.1611   1.455e-02      1.696e-02      5.921e-16      1.789e-33
## SPBC660.05     2.791e-02      2.795e-02      3.642e-14      9.869e-74
##               basic_adjp_fdr lfc_meta   lfc_var lfc_varbymed    p_meta
## SPBC2F12.09c       9.147e-03    7.152 0.000e+00    0.000e+00 1.506e-04
## SPAC22A12.17c      2.609e-02    5.916 1.123e-01    1.898e-02 5.087e-04
## SPAPB1A11.02       6.586e-03    6.137 5.880e-02    9.581e-03 5.561e-05
## SPCPB16A4.07       6.915e-03    5.632 2.810e-02    4.989e-03 4.993e-05
## SPNCRNA.1611       2.394e-04    5.521 2.657e-02    4.813e-03 2.073e-05
## SPBC660.05         3.914e-03    5.347 2.521e-02    4.714e-03 8.090e-04
##                   p_var
## SPBC2F12.09c  6.807e-08
## SPAC22A12.17c 7.762e-07
## SPAPB1A11.02  9.255e-09
## SPCPB16A4.07  7.480e-09
## SPNCRNA.1611  1.290e-09
## SPBC660.05    1.963e-06

## Here we see that edger and deseq agree the least:
all_comparisons$comparison$comp

##    wt.30_vs_wt.120
## le          0.9601
## ld          0.9808
## ed          0.9814
## lb          0.9779
## eb          0.9782
## db          0.9777

## And here we can look at the set of 'significant' genes according to various tools:
yeast_sig <- extract_significant_genes(all_combined, excel=FALSE)

## Writing excel data sheet 0/1: wt.30_vs_wt.120

## After (adj)p filter, the up genes table has 633 genes.

## After (adj)p filter, the down genes table has 629 genes.

## After fold change filter, the up genes table has 325 genes.

## After fold change filter, the down genes table has 201 genes.

## Writing excel data sheet 1/1: wt.30_vs_wt.120

## After (adj)p filter, the up genes table has 1107 genes.

## After (adj)p filter, the down genes table has 1052 genes.

## After fold change filter, the up genes table has 447 genes.

## After fold change filter, the down genes table has 278 genes.

## Writing excel data sheet 2/1: wt.30_vs_wt.120

## After (adj)p filter, the up genes table has 904 genes.

## After (adj)p filter, the down genes table has 733 genes.

## After fold change filter, the up genes table has 403 genes.

## After fold change filter, the down genes table has 219 genes.

## Writing excel data sheet 3/1: wt.30_vs_wt.120

## After (adj)p filter, the up genes table has 277 genes.

## After (adj)p filter, the down genes table has 237 genes.

## After fold change filter, the up genes table has 185 genes.

## After fold change filter, the down genes table has 105 genes.

yeast_barplots <- sm(significant_barplots(combined=all_combined))
yeast_barplots$limma

yeast_barplots$edger

yeast_barplots$deseq

2.5.1 Setting up

Since I didn’t acquire this data in a ‘normal’ way, I am going to post-generate a gff file which may be used by clusterprofiler, topgo, and gostats.

Therefore, I am going to make use of TxDb to make the requisite gff file.

limma_results <- limma_comparison$all_tables
## The set of comparisons performed
names(limma_results)

## [1] "wt.30_vs_wt.120"

table <- limma_results$wt.30_vs_wt.120
dim(table)

## [1] 7039    6

gene_names <- rownames(table)

updown_genes <- get_sig_genes(table, p=0.05, lfc=0.4, p_column="P.Value")

## After (adj)p filter, the up genes table has 1190 genes.

## After (adj)p filter, the down genes table has 1424 genes.

## After fold change filter, the up genes table has 962 genes.

## After fold change filter, the down genes table has 1069 genes.

tt <- require.auto("GenomicFeatures")
tt <- require.auto("biomaRt")
ensembl_pombe <- biomaRt::useMart("fungal_mart", dataset="spombe_eg_gene",
                                  host="fungi.ensembl.org")
pombe_filters <- biomaRt::listFilters(ensembl_pombe)
head(pombe_filters, n=20) ## 11 looks to be my guy

##                        name                                 description
## 1           chromosome_name                    Chromosome/scaffold name
## 2                     start                                       Start
## 3                       end                                         End
## 4                    strand                                      Strand
## 5        chromosomal_region      e.g. 1:100:10000:-1, 1:100000:200000:1
## 6               with_chembl                           With ChEMBL ID(s)
## 7            with_ec_number                 With Enzyme EC Number ID(s)
## 8                 with_embl      With European Nucleotide Archive ID(s)
## 9                 with_fypo With Fission Yeast Phenotype Ontology ID(s)
## 10                  with_go                               With GO ID(s)
## 11          with_goslim_goa                       With GOSlim GOA ID(s)
## 12          with_protein_id                 With INSDC protein ID ID(s)
## 13                with_kegg                             With KEGG ID(s)
## 14         with_kegg_enzyme          With KEGG Pathway and Enzyme ID(s)
## 15              with_merops  With MEROPS - the Peptidase Database ID(s)
## 16          with_entrezgene                        With NCBI gene ID(s)
## 17    with_pombase_ortholog                 With Orthologous Gene ID(s)
## 18                 with_pdb                              With PDB ID(s)
## 19  with_pombase_transcript                          With PomBase ID(s)
## 20 with_pombase_translation                With PomBase (peptide) ID(s)

possible_pombe_attributes <- biomaRt::listAttributes(ensembl_pombe)
##pombe_goids <- biomaRt::getBM(attributes=c('pombase_gene_name', 'go_accession'), filters="biotype",
##                              values=gene_names, mart=ensembl_pombe)

pombe_goids <- biomaRt::getBM(attributes=c('pombase_transcript', 'go_id'),
                              values=gene_names, mart=ensembl_pombe)
colnames(pombe_goids) <- c("ID","GO")

pombe_goids_simple <- load_biomart_go(species="spombe", overwrite=TRUE,
                                      dl_rows=c("pombase_transcript", "go_id"),
                                      host="fungi.ensembl.org")

## Unable to perform useMart, perhaps the host/mart is incorrect: fungi.ensembl.org ENSEMBL_MART_ENSEMBL.

## The available marts are:

## fungal_martfungal_variations

## Trying the first one.

## Unable to perform useDataset, perhaps the given dataset is incorrect: spombe_gene_ensembl.

## Trying instead to use the dataset: spombe_eg_gene

## That seems to have worked, extracting the resulting annotations.

## Finished downloading ensembl go annotations, saving to spombe_go_annotations.rda.

## Saving ontologies to spombe_go_annotations.rda.

## Finished save().

head(pombe_goids_simple)

##               ID         GO
## 1    SPRRNA.50.1           
## 2 SPNCRNA.1095.1           
## 3   SPAC212.11.1 GO:0000784
## 4   SPAC212.11.1 GO:0005634
## 5   SPAC212.11.1 GO:0000166
## 6   SPAC212.11.1 GO:0005524

head(pombe_goids)

##               ID         GO
## 1    SPRRNA.50.1           
## 2 SPNCRNA.1095.1           
## 3   SPAC212.11.1 GO:0000784
## 4   SPAC212.11.1 GO:0005634
## 5   SPAC212.11.1 GO:0000166
## 6   SPAC212.11.1 GO:0005524

## This used to work, but does so no longer and I do not know why.
## pombe <- sm(GenomicFeatures::makeTxDbFromBiomart(biomart="fungal_mart",
##                                                  dataset="spombe_eg_gene",
##                                                  host="fungi.ensembl.org"))

## I bet I can get all this information from ensembl now.
## This was found at the bottom of: https://www.biostars.org/p/232005/
link <- "ftp://ftp.ensemblgenomes.org/pub/release-34/fungi/gff3/schizosaccharomyces_pombe/Schizosaccharomyces_pombe.ASM294v2.34.gff3.gz"
pombe <- GenomicFeatures::makeTxDbFromGFF(link, format="gff3", organism="Schizosaccharomyces pombe",
                                          taxonomyId="4896")

## Import genomic features from the file as a GRanges object ...

## OK

## Prepare the 'metadata' data frame ... OK
## Make the TxDb object ... OK

pombe_transcripts <- as.data.frame(GenomicFeatures::transcriptsBy(pombe))
lengths <- pombe_transcripts[, c("group_name","width")]
colnames(lengths) <- c("ID","width")
## Something useful I didn't notice before:
## makeTranscriptDbFromGFF()  ## From GenomicFeatures, much like my own gff2df()
gff_from_txdb <- GenomicFeatures::asGFF(pombe)
## why is GeneID: getting prefixed to the IDs!?
gff_from_txdb$ID <- gsub(x=gff_from_txdb$ID, pattern="GeneID:", replacement="")
written_gff <- rtracklayer::export.gff3(gff_from_txdb, con="pombe.gff")

2.6 GOSeq test

summary(updown_genes)

##            Length Class      Mode
## up_genes   6      data.frame list
## down_genes 6      data.frame list

test_genes <- updown_genes$down_genes
rownames(test_genes) <- paste0(rownames(test_genes), ".1")
lengths$ID <- paste0(lengths$ID, ".1")
goseq_result <- sm(simple_goseq(sig_genes=test_genes, go_db=pombe_goids, length_db=lengths))

head(goseq_result$alldata)

##        category over_represented_pvalue under_represented_pvalue
## 327  GO:0005634               3.364e-44                        1
## 336  GO:0005730               1.046e-34                        1
## 1178 GO:0042254               1.413e-30                        1
## 120  GO:0003674               9.794e-29                        1
## 338  GO:0005737               1.157e-24                        1
## 370  GO:0005829               1.352e-20                        1
##      numDEInCat numInCat                term ontology    qvalue
## 327         100      576             nucleus       CC 5.261e-41
## 336          35       61           nucleolus       CC 8.177e-32
## 1178         25       31 ribosome biogenesis       BP 7.365e-28
## 120          81      576  molecular_function       MF 3.829e-26
## 338          77      574           cytoplasm       CC 3.619e-22
## 370          70      557             cytosol       CC 3.525e-18

goseq_result$pvalue_plots$mfp_plot

test_genes <- updown_genes$up_genes
rownames(test_genes) <- paste0(rownames(test_genes), ".1")
goseq_result <- sm(simple_goseq(sig_genes=test_genes, go_db=pombe_goids, length_db=lengths))

head(goseq_result$alldata)

##       category over_represented_pvalue under_represented_pvalue numDEInCat
## 627 GO:0008150               8.921e-75                        1        153
## 370 GO:0005829               1.015e-51                        1        126
## 120 GO:0003674               1.827e-51                        1        126
## 338 GO:0005737               7.741e-50                        1        126
## 327 GO:0005634               1.742e-41                        1        116
## 836 GO:0016020               4.310e-39                        1         96
##     numInCat               term ontology    qvalue
## 627      608 biological_process       BP 1.395e-71
## 370      557            cytosol       CC 7.940e-49
## 120      576 molecular_function       MF 9.527e-49
## 338      574          cytoplasm       CC 3.027e-47
## 327      576            nucleus       CC 5.450e-39
## 836      413           membrane       CC 1.123e-36

goseq_result$pvalue_plots$bpp_plot

index.html

pander::pander(sessionInfo())

R version 3.4.3 (2017-11-30)

**Platform:** x86_64-pc-linux-gnu (64-bit)

locale: LC_CTYPE=en_US.UTF-8, LC_NUMERIC=C, LC_TIME=en_US.UTF-8, LC_COLLATE=en_US.UTF-8, LC_MONETARY=en_US.UTF-8, LC_MESSAGES=en_US.UTF-8, LC_PAPER=en_US.UTF-8, LC_NAME=C, LC_ADDRESS=C, LC_TELEPHONE=C, LC_MEASUREMENT=en_US.UTF-8 and LC_IDENTIFICATION=C

attached base packages: parallel, stats4, stats, graphics, grDevices, utils, datasets, methods and base

other attached packages: GO.db(v.3.5.0), AnnotationDbi(v.1.40.0), edgeR(v.3.20.1), limma(v.3.34.3), fission(v.0.112.0), SummarizedExperiment(v.1.8.0), DelayedArray(v.0.4.1), matrixStats(v.0.52.2), Biobase(v.2.38.0), GenomicRanges(v.1.30.0), GenomeInfoDb(v.1.14.0), IRanges(v.2.12.0), S4Vectors(v.0.16.0), BiocGenerics(v.0.24.0), Vennerable(v.3.1.0.9000), ruv(v.0.9.6) and hpgltools(v.2017.10)

loaded via a namespace (and not attached): backports(v.1.1.1), Hmisc(v.4.0-3), plyr(v.1.8.4), lazyeval(v.0.2.1), splines(v.3.4.3), BiocParallel(v.1.12.0), ggplot2(v.2.2.1), sva(v.3.26.0), digest(v.0.6.12), foreach(v.1.4.3), BiocInstaller(v.1.28.0), htmltools(v.0.3.6), gdata(v.2.18.0), magrittr(v.1.5), checkmate(v.1.8.5), memoise(v.1.1.0), cluster(v.2.0.6), doParallel(v.1.0.11), openxlsx(v.4.0.17), Biostrings(v.2.46.0), annotate(v.1.56.1), prettyunits(v.1.0.2), colorspace(v.1.3-2), blob(v.1.1.0), ggrepel(v.0.7.0), BiasedUrn(v.1.07), dplyr(v.0.7.4), crayon(v.1.3.4), RCurl(v.1.95-4.8), graph(v.1.56.0), genefilter(v.1.60.0), lme4(v.1.1-14), bindr(v.0.1), survival(v.2.41-3), iterators(v.1.0.8), glue(v.1.2.0), gtable(v.0.2.0), zlibbioc(v.1.24.0), XVector(v.0.18.0), DEoptimR(v.1.0-8), scales(v.0.5.0), DESeq(v.1.30.0), DBI(v.0.7), Rcpp(v.0.12.14), genoPlotR(v.0.8.7), xtable(v.1.8-2), progress(v.1.1.2), htmlTable(v.1.11.0), foreign(v.0.8-69), bit(v.1.1-12), preprocessCore(v.1.40.0), Formula(v.1.2-2), htmlwidgets(v.0.9), gplots(v.3.0.1), RColorBrewer(v.1.1-2), acepack(v.1.4.1), pkgconfig(v.2.0.1), XML(v.3.98-1.9), nnet(v.7.3-12), locfit(v.1.5-9.1), labeling(v.0.3), rlang(v.0.1.4), reshape2(v.1.4.2), munsell(v.0.4.3), tools(v.3.4.3), RSQLite(v.2.0), ade4(v.1.7-8), devtools(v.1.13.4), evaluate(v.0.10.1), stringr(v.1.2.0), yaml(v.2.1.15), knitr(v.1.17), bit64(v.0.9-7), geneLenDataBase(v.1.14.0), pander(v.0.6.1), robustbase(v.0.92-8), caTools(v.1.17.1), purrr(v.0.2.4), bindrcpp(v.0.2), packrat(v.0.4.8-1), RBGL(v.1.54.0), nlme(v.3.1-131), biomaRt(v.2.34.0), compiler(v.3.4.3), pbkrtest(v.0.4-7), rstudioapi(v.0.7), variancePartition(v.1.8.0), testthat(v.1.0.2), tibble(v.1.3.4), geneplotter(v.1.56.0), stringi(v.1.1.6), highr(v.0.6), GenomicFeatures(v.1.30.0), lattice(v.0.20-35), Matrix(v.1.2-12), nloptr(v.1.0.4), goseq(v.1.30.0), data.table(v.1.10.4-3), bitops(v.1.0-6), corpcor(v.1.6.9), qvalue(v.2.10.0), rtracklayer(v.1.38.1), colorRamps(v.2.3), R6(v.2.2.2), latticeExtra(v.0.6-28), directlabels(v.2017.03.31), RMySQL(v.0.10.13), KernSmooth(v.2.23-15), gridExtra(v.2.3), codetools(v.0.2-15), MASS(v.7.3-47), gtools(v.3.5.0), assertthat(v.0.2.0), DESeq2(v.1.18.1), rprojroot(v.1.2), withr(v.2.1.0), GenomicAlignments(v.1.14.1), Rsamtools(v.1.30.0), GenomeInfoDbData(v.0.99.1), mgcv(v.1.8-22), quadprog(v.1.5-5), grid(v.3.4.3), rpart(v.4.1-11), tidyr(v.0.7.2), minqa(v.1.2.4), rmarkdown(v.1.8), Rtsne(v.0.13) and base64enc(v.0.1-3)